因式分解解下列方程X(X-2)=2-XX²-2X-3=0

来源:学生作业帮助网 编辑:作业帮 时间:2021/12/06 13:53:36

因式分解解下列方程
X(X-2)=2-X
X²-2X-3=0

X(X-2)+X-2=0
X(X-2)+(X-2)=0
(X-2)(X+1)=0
X=2,X=-1
X²-2X-3=0
(X+1)(X-3)=0
X=-1,X=3

X(X-2)=2-X
x(x-2)+(x-2)=0
(x+1)(x-2)=0
x1=-1,x2=2
X²-2X-3=0
(x+1)(x-3)=0
x1=-1,x2=3

X(X-2)=2-X
x²-2x-2+x=0
x²-x-2=0
(x-2)(x+1)=0∴x=2或x=-1
X²-2X-3=0
(x-3)(x+1)=0∴x=3活x=-1

X(X-2)=2-X
x(x-2)+(x-2)=0
(x+1)(x-2)=0
x1=-1,x2=2
X²-2X-3=0
(X+1)(X-3)=0
X=-1,X=3

x(x-2)=-x+2
x(x-2)=-(x-2)
x(x-2)+(x-2)=0
(x-2)(x+1)=0



(x-3)(x+1)=0